142520541497 has 2 divisors, whose sum is σ = 142520541498. Its totient is φ = 142520541496.

The previous prime is 142520541467. The next prime is 142520541521. The reversal of 142520541497 is 794145025241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123633811456 + 18886730041 = 351616^2 + 137429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142520541497 is a prime.

It is not a weakly prime, because it can be changed into another prime (142520541467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71260270748 + 71260270749.

It is an arithmetic number, because the mean of its divisors is an integer number (71260270749).

Almost surely, 2^142520541497 is an apocalyptic number.

It is an amenable number.

142520541497 is a deficient number, since it is larger than the sum of its proper divisors (1).

142520541497 is an equidigital number, since it uses as much as digits as its factorization.

142520541497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 142520541497 in words is "one hundred forty-two billion, five hundred twenty million, five hundred forty-one thousand, four hundred ninety-seven".